$$=\frac{20200-18200}{18200}\times100; =10.9896$$
$\frac{1000}{91}\approx 10.989010989$
$$\frac{2000}{18200}\times 100$$
$$\frac{10}{91}\times 100$$
$$\frac{10\times 100}{91}$$
$$\frac{1000}{91}$$
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$\frac{2 ^ {3} \cdot 5 ^ {3}}{7 \cdot 13} = 10\frac{90}{91} = 10.989010989010989$
